Dispersive and absorptive corrections to the pion-deuteron scattering length

Abstract

We present a parameter--free calculation of the dispersive and absorptive contributions to the pion--deuteron scattering length based on chiral perturbation theory. We show that once all diagrams contributing to leading order to this process are included, their net effect provides a small correction to the real part of the pion--deuteron scattering length. At the same time the sizable imaginary part of the pion--deuteron scattering length is reproduced accurately.

Numerical error corrected. Results for dispersive corrections changed - conclusions unchanged. Version as accepted by Phys. Lett. B

References in corpus (2)

• Deuteron Matrix Elements in Chiral Effective Theory at Leading Order
• Pion Deuteron Scattering and Chiral Expansions

Cited by in corpus (14)

• Chiral Perturbation Theory and Baryon Properties
• Precision calculation of the pi^- deuteron scattering length and its impact on threshold pi-N scattering
• Using effective field theory to analyse low-energy Compton scattering data from protons and light nuclei
• Pionic deuterium
• On the role of isospin violation in the pion-nucleon $\sigma$-term
• Role of the Delta(1232) in pion-deuteron scattering at threshold within chiral effective field theory
• Precision determination of the dpi -> NN transition strength at threshold
• The s-wave pion-nucleus optical potential
• Pion reactions on two--nucleon systems
• Advances in the field-theoretic understanding of pion production in nucleon-nucleon collisions
• Pion absorption from the lowest atomic orbital in 2H, 3H and 3He
• The piNN system - recent progress
• Non-Strange Meson Production with Hadronic Probes
• Nucleon mass: trace anomaly and $\sigma$-terms